I recently wrote about the challenges, as I see them, with the Layer 2 aspects of moving from an established controller-based WLAN solution to one like Aerohive, Meraki, Mist, or Ubiquiti that is managed in the cloud. That article is here, at IT Toolbox.
Want the short version of The Layer 2 Situation? Being all about value, I can help you out… Let’s start with the simple view of VLANs that underpin a controller-based WLAN environment:
Betwixt the switch and the AP you have a single VLAN. It’s simple, it’s clean. It’s not a spanning tree asspain. But cut into that single VLAN with your magic network knife, and you’ll find a CAPWAP tunnel with as many VLANs as you need. In large environments, that may be dozens o’ VLANs for various SSIDs scattered across thousands of APs.
Contrast that with the typical fat AP/cloud AP VLAN underlay:
Ugh- see the difference? In those large WLAN environments- where thousands of APs equals hundreds of switches- you might have to configure thousands and thousands of switch interfaces to convert the simple CAPWAP-oriented LAN to the VLAN-heavy LAN needed by fatty-fat APs- AND most cloud APs.
Mojo evidently agrees with that ugh and offers an option that preserves the goodness of the cloud approach (No NMS to keep up, easier code upgrades, no buggy controllers to babysit, etc) while providing an easy way to NOT go down VLAN rabbit holes when converting from controller to cloud. This magical hybrid approach features the Multiservice Platform:
Tres sexy, no? I had heard about Mojo’s Multiservice Platform last year at Mobility Field Day 2, but will admit I lost some of the messaging in the din of all the “Cognitive blah blah blah”. But when I recently wrote about The Layer 2 Situation, two good citizens from WLAN land came forward and reminded me that this nut has indeed been cracked, and by Mojo.
So… will Arista continue with the Multiservice Platform? I have to say that I really hope so. I hope they promote the heck out of it, and that other cloud Wi-Fi vendors follow suite. I don’t know whether I’ll ever run a massive cloud AP WLAN (I do currently run a massive controller-based Wi-Fi network and a lot of cloud-based branches), but if I do it’s nice to know that there is at least hope for The Layer 2 Situation.